Re: [ovirt-devel] [oVirt 3.6 Localization Question #6] "cannot accommodate memory of VM's pinned virtual NUMA nodes within host's physical NUMA nodes."

On 05/11/2015 04:56 PM, Doron Fediuck wrote: > > On 11/05/15 09:20, Yuko Katabami wrote: >> Hi all, >> >> I have another question on a 3.6 string. >> >> *File:***AppErrors >> *Resource ID:***VAR__DETAIL__NOT_MEMORY_PINNED_NUMA >> *String:***$detailMessage cannot accommodate memory of VM's pinned >> virtual NUMA nodes within host's physical NUMA nodes. >> *Question:* I have a bit of difficulty clearly understanding this >> string. Particularly the part "memory of VM's pinned virtual NUMA nodes" >> Could anyone paraphrase this? (Could it possibly be "memory of VM's >> pinned to virtual NUMA noteds"?) >> >> >> Thank you, >> >> Yuko >> >> >> > Hi Yuko, > NUMA is splitting memory+cpu into smaller cells, where each cell has > cpu+ram. This is possible in real machines, and also inside the guest. > > The best performance is achieved when you make sure each virtual cell > (virtual node / vnode) is pinned to a physical cell (pnode). > > If the physical node is smaller than the vnode, or occupied with other > VMs, you will get this error. > > Doron Hi Doron, Thank you very much for your explanation. I think I understand the concept now but I would like to double check with you -- can it be re-phrased as: "cannot allocate memory to the VM's virtual NUMA nodes which is pinned to host's physical NUMA nodes." (I also want to check accommodate vs allocate)

Kind regards, Yuko